It's all positive promotion and, for one, it's more than welcome! Let's be thankful there are people outside of the Bitcoin industry willing to promote it, otherwise most mainstream exposure would be due to negative news such as Cryptolocker and Bitcoin ransom.
Exactly, like the news that i read yesterday from this forum about the google devs, they was "promoting" bitcoin on his YouTube channel, we cant expect nothing better than that, spread the Word of bitcoin is always welcome and thats exactly what they are indirectly doing.
What we should do is to retweet them too.